WO2020079512A1 - Scierie à moteur sans balais - Google Patents

Scierie à moteur sans balais Download PDF

Info

Publication number
WO2020079512A1
WO2020079512A1 PCT/IB2019/058345 IB2019058345W WO2020079512A1 WO 2020079512 A1 WO2020079512 A1 WO 2020079512A1 IB 2019058345 W IB2019058345 W IB 2019058345W WO 2020079512 A1 WO2020079512 A1 WO 2020079512A1
Authority
WO
WIPO (PCT)
Prior art keywords
sawmill
motor
hub motor
band
present
Prior art date
Application number
PCT/IB2019/058345
Other languages
English (en)
Inventor
Jabir K FAREED
Original Assignee
Fareed Jabir K
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fareed Jabir K filed Critical Fareed Jabir K
Publication of WO2020079512A1 publication Critical patent/WO2020079512A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
    • B23D55/06—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of drives for strap saw blades; of wheel mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D53/00—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting
    • B23D53/001—Machines or devices for sawing with strap saw-blades which are effectively endless in use, e.g. for contour cutting transportable, e.g. fitted with wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B15/00—Band or strap sawing machines specially designed for length cutting of trunks
    • B27B15/02—Band or strap sawing machines specially designed for length cutting of trunks with horizontally-guided saw blade, i.e. horizontal log band saw

Definitions

  • the present invention relates to the mechanical field. More specifically, the present invention is related to an improved sawmill used for sawing objects. BACKGROUND
  • FIG. 1 is a schematic of a sawmill (100) as known in the prior art.
  • AC Induction motors are used in sawmills.
  • AC induction motors are heavy and large and bulky so special arrangements are required for mounting AC induction motors.
  • These motors require two additional pulleys, an additional shaft, extra supporting bearing blocks, and a belt for coupling and speed reduction and also an extra belt tensioning mechanism for motor.
  • Embodiments of the present invention disclose an improved sawmill.
  • the improved sawmill includes a BLDC hub motor, band wheel, band blade, motor and worm gear box, freewheel, vertical carriage lifting mechanism, and a mounting support for BLDC hub motor.
  • the BLDC hub motor is adapted to drive a band blade driving wheel.
  • the band wheel is directly mounted on BLDC hub motor.
  • FIG. l is a schematic of a sawmill device as known in the prior art.
  • FIG. 2 is a schematic of an improved sawmill (10) in accordance with an embodiment of the present invention.
  • FIG. 3 is a schematic of an improved sawmill (10) in accordance with another embodiment of the present invention.
  • FIG. 4 is a schematic of an improved sawmill (10) in accordance with another embodiment of the present invention.
  • FIG. 5 is a schematic of an improved sawmill (10) in accordance with another embodiment of the present invention.
  • FIG. 6 is a schematic of an improved sawmill (10) in accordance with another embodiment of the present invention.
  • An embodiment of present invention provides an improved sawmill (10).
  • the improved sawmill (10) includes a BLDC hub motor (1), Band wheel (2), Band blade (3), Motor and worm gear box (4), Freewheel (5), Vertical carriage lifting mechanism (6) and a mounting support (7) for BLDC hub motor.
  • a BLDC hub motor (1) is adapted to drive a band blade driving wheel.
  • the Band wheel (2) is directly mounted on BLDC hub motor (1).
  • FIG. 3 depicts the back view of the improved sawmill (10).
  • FIG. 4 depicts the right side view of the improved sawmill (10).
  • FIG. 5 depicts the top view of the improved sawmill (10).
  • the BLDC hub motor (1) is dust proof, water proof (with ip65 specification). Further, in the improved sawmill (10), there are no other protruding parts which results in a compact design. Due to removal of induction motor and additional parts, the weight and size of sawmill is also considerably reduced.
  • the improved sawmill (10) enables the use of BLDC hub motor (1) in band sawmill to directly drive band wheel (2) which further drives the drive band blade (3).
  • the major advantage of the present invention is that with the BLDC hub motor (1), sawmill (10) became very much simplified. No other protruding parts and a compact design results by the use of BLDC hub motor in design. The weight and size of sawmill also considerably reduced. Further, the reduction in number of parts, the servicing, handling and transportation of the machine is also simplified. Secondly, the other machine elements such as lifting motor, lifting gear, chain etc. are also became small and less power consuming. Considering further advantages, with present invention, greasing and other types of lubrication and pollution caused by lubricating materials are reduced due to reduced number of moving parts.
  • the improved sawmill (10) is designed to run in a low power mode by control electronics when less energy is required like when cutting logs with small diameter. This also saves energy. Further, due to reduced parts, the energy consumed by pulleys, connecting shaft, friction in these parts and belt slippage is saved. Thus, with these features approximately 70% energy is saved which is one of the main advantages of this design.
  • the present invention is also efficient in saving space and cost due to reduction in components.
  • the BLDC hub motor (1) used in the present invention is light weight as compared to induction motor for same power rating. Further, extra pulleys, coupling components and motor fittings are not required. So weight unbalance problem is almost eliminated and counter weight is not required which saves space and material.
  • the BLDC motors are electronically controlled by a BLDC motor driver, therefore precise control of motor is possible.
  • the speed of BLDC motors are independent of AC mains power supply where as in AC induction motor speed varies with the fluctuations in mains supply frequency which produce vibrations in band blade cause marks in the cut wood, thus reducing quality of cut wood.
  • band blade In a band saw machine, most of the sound is produced when band blade is running due to metal to metal contact between band blade and band wheel.
  • the band blade In present invention, the band blade is driven by the motor only less than half of working time of sawmill machine. So sound pollution is reduced to half.
  • the improved sawmill (l0) is adapted to run on battery which makes the improved sawmill (10) working during power cuts. This further eliminates the need of generator and hence reduces cost, expense of fuel in generator, and also eliminates air pollution and sound pollution produced by the generator.
  • the improved sawmill (10) with BLDC hub motor (1) as drive motor is portable in nature. For portability, battery and transporting wheels are added. This sawmill machine is more environment friendly and light weight to transport when compared to ordinary gasoline or diesel engine powered portable sawmills.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

La présente invention concerne une scierie améliorée (10). La scierie améliorée (10) comprend un moteur-roue sans balais (1), un volant de scie (2), une lame à ruban (3), un compartiment moteur et de vis sans fin (4), une roue libre (5), un mécanisme de levage vertical de chariot (6) et un support de montage (7) destiné à un moteur-roue sans balais. Le moteur-roue sans balais (1) est conçu pour entraîner une roue motrice de lame à ruban. Le volant de scie (2) est directement monté sur le moteur-roue sans balais (1).
PCT/IB2019/058345 2018-10-15 2019-10-01 Scierie à moteur sans balais WO2020079512A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201841039139 2018-10-15
IN201841039139 2018-10-15

Publications (1)

Publication Number Publication Date
WO2020079512A1 true WO2020079512A1 (fr) 2020-04-23

Family

ID=70284498

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2019/058345 WO2020079512A1 (fr) 2018-10-15 2019-10-01 Scierie à moteur sans balais

Country Status (1)

Country Link
WO (1) WO2020079512A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6163373A (en) * 1972-10-23 1975-04-24 Mckee N D J Improved bandsaw assembly
US20030024371A1 (en) * 2001-07-31 2003-02-06 Herman Gibson Portable bandsaw mill

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6163373A (en) * 1972-10-23 1975-04-24 Mckee N D J Improved bandsaw assembly
US20030024371A1 (en) * 2001-07-31 2003-02-06 Herman Gibson Portable bandsaw mill

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